[forwarddelete-to-join-blocks.tentative.html]
  [document.execCommand("forwarddelete") when "<div>&nbsp;&nbsp;&nbsp;[\]</div><div><br></div>"]
    expected: FAIL

  [document.execCommand("forwarddelete") when "<div>a&nbsp;&nbsp;&nbsp;[\]</div><div><br></div>"]
    expected: FAIL

  [document.execCommand("forwarddelete") when "<div>&nbsp;&nbsp;&nbsp;[\]<div><br></div></div>"]
    expected: FAIL

  [document.execCommand("forwarddelete") when "<div>a&nbsp;&nbsp;&nbsp;[\]<div><br></div></div>"]
    expected: FAIL

  [document.execCommand("forwarddelete") when "<div>a[\]<div>&nbsp;&nbsp;&nbsp;b</div></div>"]
    expected: FAIL

  [document.execCommand("forwarddelete") when "<div>a&nbsp;&nbsp;&nbsp;[\]<div>&nbsp;&nbsp;&nbsp;b</div></div>"]
    expected: FAIL

  [document.execCommand("forwarddelete") when "<div><div>a[\]</div>&nbsp;&nbsp;&nbsp;b</div>"]
    expected: FAIL

  [document.execCommand("forwarddelete") when "<div><div>a&nbsp;&nbsp;&nbsp;[\]</div>&nbsp;&nbsp;&nbsp;b</div>"]
    expected: FAIL